// 
// LanguageBindingService.cs
//  
// Author:
//       Mike Krüger <mkrueger@novell.com>
// 
// Copyright (c) 2009 Novell, Inc (http://www.novell.com)
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

using System;
using System.Collections.Generic;
using System.Linq;
using Mono.Addins;
using MonoDevelop.Projects.Extensions;
using MonoDevelop.Core;

namespace MonoDevelop.Projects
{
	public static class LanguageBindingService
	{
		const string LanguageBindingExtensionPath = "/MonoDevelop/ProjectModel/LanguageBindings";
		static LanguageBinding[] extensions;

		static void InitExtensions ()
		{
			if (extensions == null) {
				AddinManager.ExtensionChanged += (sender, args) => {
					if (args.Path == LanguageBindingExtensionPath)
						LoadExtensions ();
				};
				Runtime.RunInMainThread ((Action)LoadExtensions).Wait ();
			}
		}

		static void LoadExtensions ()
		{
			extensions = AddinManager.GetExtensionNodes<LanguageBindingExtensionNode> (LanguageBindingExtensionPath).Select (b => b.LanguageBinding).ToArray ();
		}

		public static IEnumerable<LanguageBinding> LanguageBindings {
			get {
				InitExtensions ();
				return extensions;
			}
		}
		
		public static LanguageBinding GetBindingPerFileName (string fileName)
		{
			if (String.IsNullOrEmpty (fileName)) {
				MonoDevelop.Core.LoggingService.LogWarning ("Cannot get binding for null filename at {0}", Environment.StackTrace);
				return null;
			}
			return LanguageBindings.FirstOrDefault (binding => binding.IsSourceCodeFile (fileName));
		}
		
		public static LanguageBinding GetBindingPerLanguageName (string language)
		{
			if (String.IsNullOrEmpty (language)) {
				MonoDevelop.Core.LoggingService.LogWarning ("Cannot get binding for null language at {0}", Environment.StackTrace);
				return null;
			}
			return LanguageBindings.FirstOrDefault (binding => binding.Language == language);
		}
	}
}
